MARIA Troiane (-[1089/1118]). Her parentage is confirmed by Nikephoros Bryennios who records that "uxor Andronici" was "genus a Samuele…Bulgarorum rege, e cuius filio Troianne nata ipsa erat", adding that "materna vero ei prosapia referebatur ad Contostephanos, Aballantes et Phocadas"[191]. The Alexeiad records that "the daughter-in-law of the Cæsar Ioannes…protovestiaria" was imprisoned "in the nunnery of Petrion near the Sidera" when the Komnenoi plot against Emperor Nikephoros Botaneiates was discovered, referring to her as "kinswoman" of Anna Dalassena and, in a later passage, stating that she "was of Bulgarian descent"[192]. Protobestiaria. She became a nun as XENE. m (before 1063) ANDRONIKOS Dukas, protobestiarios, son of IOANNES Dukas & his wife Eirene Pegonitissa (-14 Oct 1077). Co-Emperor 1067-1070.
http://fmg.ac/Projects/MedLands/BULGARIA.htm#MariaTroianedied10891118